If a sample that is 4860 years old has 50 radium atoms remaining, how many atoms were in the original sample?

A wave has a frequency of 2.0 Hz. if its traveling at a velocity of 20 m/s what it is the wavelength of the wave A. 10m B. 40m C. 100m D 0.10m

experiment was performed on a 2-kg block. Forces of 5, 10 and 15 Newtons respectively were applied to the block for 5 seconds. Describe the difference in acceleration between the three trials. A) The final accelerations will all be the same.

In which structure would the egg need to be fertilized?

If you looked at the frequently spectrums of two friends saying the word dog, would they look the same or different ?

An elements atomic number is 8 how many protons would an atom of this element have

How does the energy and motion of particles change as a substance is heated

If a sample that is 4860 years old has 50 radium atoms remaining, how many atoms were in the original sample?

If we have an unmarked magnet, how can we tell which end is the north pole of the magnet?

Why are microwaves beneficial to use for transmitting information

What instrument is normally used to measure atmospheric pressure? a. thermometer b. barometer c. hydrometer d. spectrometer